EP0028479B1 - Forage chopping cylinder - Google Patents
Forage chopping cylinder Download PDFInfo
- Publication number
- EP0028479B1 EP0028479B1 EP80303712A EP80303712A EP0028479B1 EP 0028479 B1 EP0028479 B1 EP 0028479B1 EP 80303712 A EP80303712 A EP 80303712A EP 80303712 A EP80303712 A EP 80303712A EP 0028479 B1 EP0028479 B1 EP 0028479B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- knives
- crop
- director
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F29/00—Cutting apparatus specially adapted for cutting hay, straw or the like
- A01F29/06—Cutting apparatus specially adapted for cutting hay, straw or the like having rotating knives with their cutting edges on a cylinder surface, e.g. of the helical-type
Definitions
- This invention relates to the harvesting arts and, more particularly, to specific improvements in chopping cylinders used to reduce long stalks of forage materials into relatively short segments for silage.
- a crop material chopping cylinder comprising a shaft defining the axis of rotation of the cylinder, a plurality of support members attached to the shaft at spaced locations along the latter and having respectively radially outwardly disposed extremities, a plurality of elongate continuous knives extending continuously substantially from one end to the opposite end of the cylinder, and generally longitudinally of the shaft at said outer extremities of the members and securely attached thereto for rotation with the shaft and the members about said axis, each of said knives having an inner face, an outer face, and a leading crop-cutting edge at the convergence of said faces, said cutting edge of each knife winding generally helically around the cylinder, a plurality of crop-flow controlling directors each having an inwardly-bowed crop-engaging front surface and each provided with a back surface opposite said front surface thereof, and fastener means attaching one director to said inner face of each of said knives between an adjacent pair of said members in disposition to encourage the flow of crop severed by
- US-A-4 011 998 describes a cutting cylinder having knife segments extending across its periphery in a staggered pattern so that each row winds essentially helically from end to end of the cylinder.
- These knife segments are carried by mounting members extending radially from a shaft and secured to these mounting members are crop-flow controlling directors, one for each knife segment, each director being smoothly accurate, each arcuate surface serving to direct cut matter away from the radially inner face of its associated knife segment and back to the outside of the cutting cylinder.
- said fastener means includes bracket means fixed to said back surface, and the threaded coupler means connect at least one of said bracket means to said inner face of each of said knives.
- each director comprises an initially flat, rectangular body curved and twisted slightly about an axis oblique to opposite inner and outer edges thereof, said front surface of each director being smoothly arcuate, said bracket means orienting the directors such that only their outer edges engage the knifefaces while the remaining portions of the directors project generally radially inwardly from the knives to encourage the flow of crop severed by the cylinder during rotation thereof to be carried peripherally of the cylinder.
- the cylinder 10 is disposed within a housing 12 for rotation in the direction of the arrow 14 in order to cooperate with a shearbar 16 to reduce, chop or sever into segments crop materials entering the housing 12 via the feed opening 18.
- Feed rolls 20, 22, 24, and 26 are located in upstream relationship to the feed opening 18 in order to propel the stalks of crop material at predetermined speeds into the housing for severance by the cylinder 10, whereupon the crop segments are discharged from the housing 12 through outlet 28 and into a rearwardly disposed fan housing 30 provided with a fan 32 that engages the materials and impels them toward a point of ultimate discharge from the housing 30.
- the cylinder 10 itself is provided with a main drive shaft 34 which is journaled in the walls of the housing 12 for rotation about its longitudinal axis, thereby defining the axis of rotation of the cylinder 10.
- a main drive shaft 34 Fixed to the shaft 34 at three spaced locations along the latter are three supporting members or spiders 36, 38, and 40 having radially outermost extremities to which six shearing knives 42 are attached.
- the specific points 44 of knife attachment of the spiders 36-40 with respect to each individual knife 42 are indexed or rotated into a circumferentially offset pattern to accommodate the generally helical nature of the knives 42.
- Each of the spiders 36, 38 and 40 is provided with a mounting bolt 46 that securely fastens down the corresponding knife 42 against the respective points of attachment 44.
- Each knife 42 is elongated, having a pair of opposite ends 48 and 50, a trailing edge 52, and a leading sharp cutting edge 54.
- An outer face 56 is located on one side of each knife 42 while an inner face 58 is located on the opposite side thereof, both faces 56, 58 being predominantly flat with the exception of the twisted nature of the knife 42 as will be explained below and with the further exception of a bevel 60 on the outer face 56 causing the latter to converge toward the inner face 58 and define the cutting edge 54 along the point of convergence of the two faces 56, 58.
- each of the knives 42 lies across the three spiders 36, 38 and 40 in a diagonally extending manner, and the body of the knife itself is twisted transversely to such an extent that the cutting edge 54 thereof winds in a substantially helical manner around the periphery of the cylinder 10, at least to the extent permitted by the overall length of each knife 42.
- this causes points along the cutting edge 54 of each knife 42 to sequentially and progressively sweep past and in cooperation with the shearbar 16 such that the severing action which results is more in the nature of a scissor-like cutting action than in the nature of a blunt chop.
- each of the knives 42 is provided with one or more flow directors broadly denoted by the numeral 62 situated between an adjacent pair of the spiders 36, 38 and 40.
- each knife 42 has a pair of the directors 62, one positioned between the spiders 36 and 38, and the other between the spiders 38 and 40.
- Each director 62 is attached to the knife 42 against the inner face 58 thereof in such a manner as to project substantially radially inwardly from the knife 42, and each is set back with respect to the cutting edge 54 as illustrated most clearly in Figs. 2 and 3.
- Each of the directors 62 comprises an elongated body which is constructed from an initially flat, rectangular pattern as illustrated in Fig. 7. Opposite longitudinal edges 64 and 66 of the body extend between opposite, transversely extending ends 68 and 70, and each body is formed out of its flat pattern about an axis of curvature running longitudinally thereof so that the resulting director 62 becomes provided with an inwardly bowed, partially cylindrical front, crop-engaging surface 72 on one side thereof and with an outwardly bowed, back mounting surface 74 on the opposite side thereof. As illustrated in Fig.
- each director 62 extends obliquely with respect to the two opposite ends 68, 70 such that the two longitudinal edges 64 and 66 are skewed with respect to one another in the manner illustrated in Fig. 6, notwithstanding the initial rectangular configuration of the flat pattern.
- Each director 62 is provided with fastener means broadly denoted by the numeral 78 for attaching the same to the corresponding knife 42.
- Each of the fastener means 78 includes a pair of brackets 80 of identical construction and of generally inverted, L-shaped configuration when viewed in one edge elevation thereof.
- Each bracket 80 has an inner portion 82 designed to complementally receive and abuttingly engage the back surface 74 of the director 62 so as to facilitate fixed attachment of the bracket 80 to the back surface 74 via welding or the like.
- each bracket 80 extends generally transversely of the longitudinal axis of the director somewhat outboard of a median location thereof, while a second leg 86 extends at an abrupt angle to the leg 84 longitudinally of the director and at a location adjacent to the longitudinal edge 64 thereof.
- the leg 86 presents a flat portion 88 of the bracket 80 that is adapted to abuttingly engage and lie somewhat generally flatly against the inner face 58 of the corresponding knife 42 as shown perhaps most clearly in Fig. 3.
- brackets 80 of each director 62 are oriented in the same manner, one to the left of center and one to the right of center, and the flat portion 88 of each is perforated to present a hole 90 situated to be disposed in axial registration with a corresponding perforation in the knife 42, such perforation of knife 42 being in the nature of a hole 92.
- each aligned and registered pair of holes 90, 92 receives threaded coupler means in the nature of a bolt and nut assembly 94, and with the flat portions 88 of the brackets 80 projecting outwardly from the bowed back surface 74 in the illustrated manner, the longitudinal edge 64 of each director 62 substantially abutting engages the inner face 58 of its knife 42 while its remaining portion projects substantially radially inwardly of the cylinder 10 to control crop flow in the manner discussed below. It will be noted also that as a result of the skewed nature of the edges 64 and 66, the longitudinal axis of each director 62 generally follows the longitudinal axis of knife 42 in its helical disposition about the periphery of the cylinder 10.
- any forage choppers having flow assisting cups and the like were of substantially more massive design and were provided with either integral cup-shaped blades or with blades which did not slice through the incoming crop material in the clean, scissor-like action obtained by the knives 42 of cylinder 10.
- Their blunt, impactive chopping actions instead of clean severance made their designs less desirable from a power requirement standpoint.
- the present invention enables the user to obtain not only the desired clean severing action and its many benefits, but also crop flow control and its significant attributes.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
- Threshing Machine Elements (AREA)
Description
- This invention relates to the harvesting arts and, more particularly, to specific improvements in chopping cylinders used to reduce long stalks of forage materials into relatively short segments for silage.
- It is known from DE-U-7609165 to provide a crop material chopping cylinder comprising a shaft defining the axis of rotation of the cylinder, a plurality of support members attached to the shaft at spaced locations along the latter and having respectively radially outwardly disposed extremities, a plurality of elongate continuous knives extending continuously substantially from one end to the opposite end of the cylinder, and generally longitudinally of the shaft at said outer extremities of the members and securely attached thereto for rotation with the shaft and the members about said axis, each of said knives having an inner face, an outer face, and a leading crop-cutting edge at the convergence of said faces, said cutting edge of each knife winding generally helically around the cylinder, a plurality of crop-flow controlling directors each having an inwardly-bowed crop-engaging front surface and each provided with a back surface opposite said front surface thereof, and fastener means attaching one director to said inner face of each of said knives between an adjacent pair of said members in disposition to encourage the flow of crop severed by the cylinder during rotation thereof to be carried peripherally of the cylinder during its movement around and with the latter, and threaded coupler means passing through each of said knives. An object of the invention is to provide an improved crop material chopping cylinder.
- US-A-4 011 998 describes a cutting cylinder having knife segments extending across its periphery in a staggered pattern so that each row winds essentially helically from end to end of the cylinder. These knife segments are carried by mounting members extending radially from a shaft and secured to these mounting members are crop-flow controlling directors, one for each knife segment, each director being smoothly accurate, each arcuate surface serving to direct cut matter away from the radially inner face of its associated knife segment and back to the outside of the cutting cylinder.
- According to the present invention said fastener means includes bracket means fixed to said back surface, and the threaded coupler means connect at least one of said bracket means to said inner face of each of said knives. In addition, each director comprises an initially flat, rectangular body curved and twisted slightly about an axis oblique to opposite inner and outer edges thereof, said front surface of each director being smoothly arcuate, said bracket means orienting the directors such that only their outer edges engage the knifefaces while the remaining portions of the directors project generally radially inwardly from the knives to encourage the flow of crop severed by the cylinder during rotation thereof to be carried peripherally of the cylinder.
-
- Figure 1 is a front elevational view of a chopping cylinder in accordance with the principles of the present invention;
- Fig. 2 is an end elevational view of the cylinder . but with the supporting spiders for the knives eliminated for purposes of clarity;
- Fig. 3 is an enlarged, fragmentary, transverse, cross-sectional view of one of the knives taken substantially along line 3-3 of Fig. 1;
- Fig. 4 is a top plan view of one of the knives;
- Fig. 5 is a left rear perspective view of one of the directors;
- Fig. 6 is a top plan view thereof; and
- Fig. 7 is a plan view of the flat pattern for one of the directors prior to forming the same into its cupped or partially cylindrical configuration.
- Fig. 8 illustrates schematically the environment within which the chopping cylinder according to the present invention is normally to be found.
- The
cylinder 10 is disposed within ahousing 12 for rotation in the direction of the arrow 14 in order to cooperate with a shearbar 16 to reduce, chop or sever into segments crop materials entering thehousing 12 via thefeed opening 18.Feed rolls cylinder 10, whereupon the crop segments are discharged from thehousing 12 throughoutlet 28 and into a rearwardly disposedfan housing 30 provided with afan 32 that engages the materials and impels them toward a point of ultimate discharge from thehousing 30. - The
cylinder 10 itself is provided with amain drive shaft 34 which is journaled in the walls of thehousing 12 for rotation about its longitudinal axis, thereby defining the axis of rotation of thecylinder 10. Fixed to theshaft 34 at three spaced locations along the latter are three supporting members orspiders shearing knives 42 are attached. Thespecific points 44 of knife attachment of the spiders 36-40 with respect to eachindividual knife 42 are indexed or rotated into a circumferentially offset pattern to accommodate the generally helical nature of theknives 42. Each of thespiders mounting bolt 46 that securely fastens down thecorresponding knife 42 against the respective points ofattachment 44. - Each
knife 42 is elongated, having a pair ofopposite ends trailing edge 52, and a leadingsharp cutting edge 54. Anouter face 56 is located on one side of eachknife 42 while aninner face 58 is located on the opposite side thereof, bothfaces knife 42 as will be explained below and with the further exception of abevel 60 on theouter face 56 causing the latter to converge toward theinner face 58 and define thecutting edge 54 along the point of convergence of the twofaces - As above eluded to, each of the
knives 42 lies across the threespiders cutting edge 54 thereof winds in a substantially helical manner around the periphery of thecylinder 10, at least to the extent permitted by the overall length of eachknife 42. As will be recognized, this causes points along thecutting edge 54 of eachknife 42 to sequentially and progressively sweep past and in cooperation with the shearbar 16 such that the severing action which results is more in the nature of a scissor-like cutting action than in the nature of a blunt chop. Further contributing to this scissoring severance is the relatively steep angle at which the knives approach the shearbar 16 as shown, for example, in Fig. 8. As a result of this steep angle, it is to be understood that thecutting edge 54 cannot be truly parallel with therear edge 52 and still wind helically around the periphery of thecylinder 10, it instead being necessary for thecutting edge 54 to be slightly bowed outwardly along the central portion thereof in the manner perhaps best illustrated in Fig. 4. - Pursuant to the present invention, each of the
knives 42 is provided with one or more flow directors broadly denoted by thenumeral 62 situated between an adjacent pair of thespiders knife 42 has a pair of thedirectors 62, one positioned between thespiders spiders director 62 is attached to theknife 42 against theinner face 58 thereof in such a manner as to project substantially radially inwardly from theknife 42, and each is set back with respect to thecutting edge 54 as illustrated most clearly in Figs. 2 and 3. - Each of the
directors 62 comprises an elongated body which is constructed from an initially flat, rectangular pattern as illustrated in Fig. 7. Oppositelongitudinal edges ends resulting director 62 becomes provided with an inwardly bowed, partially cylindrical front, crop-engaging surface 72 on one side thereof and with an outwardly bowed,back mounting surface 74 on the opposite side thereof. As illustrated in Fig. 7, the axis ofcurvature 76 about which the flat pattern is curved to form eachdirector 62 extends obliquely with respect to the twoopposite ends longitudinal edges - Each
director 62 is provided with fastener means broadly denoted by thenumeral 78 for attaching the same to thecorresponding knife 42. Each of the fastener means 78 includes a pair ofbrackets 80 of identical construction and of generally inverted, L-shaped configuration when viewed in one edge elevation thereof. Eachbracket 80 has aninner portion 82 designed to complementally receive and abuttingly engage theback surface 74 of thedirector 62 so as to facilitate fixed attachment of thebracket 80 to theback surface 74 via welding or the like. Oneleg 84 of eachbracket 80 extends generally transversely of the longitudinal axis of the director somewhat outboard of a median location thereof, while asecond leg 86 extends at an abrupt angle to theleg 84 longitudinally of the director and at a location adjacent to thelongitudinal edge 64 thereof. Theleg 86 presents aflat portion 88 of thebracket 80 that is adapted to abuttingly engage and lie somewhat generally flatly against theinner face 58 of thecorresponding knife 42 as shown perhaps most clearly in Fig. 3. - Both
brackets 80 of eachdirector 62 are oriented in the same manner, one to the left of center and one to the right of center, and theflat portion 88 of each is perforated to present ahole 90 situated to be disposed in axial registration with a corresponding perforation in theknife 42, such perforation ofknife 42 being in the nature of ahole 92. Each aligned and registered pair ofholes nut assembly 94, and with theflat portions 88 of thebrackets 80 projecting outwardly from the bowedback surface 74 in the illustrated manner, thelongitudinal edge 64 of eachdirector 62 substantially abutting engages theinner face 58 of itsknife 42 while its remaining portion projects substantially radially inwardly of thecylinder 10 to control crop flow in the manner discussed below. It will be noted also that as a result of the skewed nature of theedges director 62 generally follows the longitudinal axis ofknife 42 in its helical disposition about the periphery of thecylinder 10. - As a result of the above construction, the flow of crop materials which would normally head inwardly toward the axial center of the
cylinder 10 immediately following severance at the shearbar 16 is prevented from doing so by thedirectors 62 and is, instead, maintained substantially at the outer periphery of thecylinder 10 during travel around the latterfrom the inlet 18to thedischarge outlet 28. Performance tests comparing harvesters having cylinders constructed in accordance with the present invention and those having cylinders identical in all respects to thecylinder 10 but lacking the directors have revealed that the design of the present invention yields greatly improved results insofar as operating efficiency is concerned. This is particularly significant because, heretofore, any forage choppers having flow assisting cups and the like were of substantially more massive design and were provided with either integral cup-shaped blades or with blades which did not slice through the incoming crop material in the clean, scissor-like action obtained by theknives 42 ofcylinder 10. Their blunt, impactive chopping actions instead of clean severance made their designs less desirable from a power requirement standpoint. Thus, the present invention enables the user to obtain not only the desired clean severing action and its many benefits, but also crop flow control and its significant attributes.
Claims (1)
- A crop material chopping cylinder comprising a shaft (34) defining the axis of rotation of the cylinder (10), a plurality of support members (36, 38, 40) attached to the shaft (34) at spaced locations along the latter and having respectively radially outwardly disposed extremities, a plurality of elongate continuous knives (42) extending continuously substantially from one end to the opposite end of the cylinder (10), and generally longitudinally of the shaft at said outer extremities of the members (36, 38, 40) and securely attached thereto for rotation with the shaft (34) and the members about said axis, each of said knives (42) having an inner face (58), an outer face (56), and a leading crop-cutting edge (54) at the convergence of said faces, said cutting edge (54) of each knife (42) winding generally helically around the cylinder (10), a plurality of crop-flow controlling directors (62) each having an inwardly-bowed crop-engaging front surface (72) and each provided with a back surface (74)_ opposite said front surface thereof, and fastener means (78) attaching one director (62) to said inner face (50) of each of said knives (42) between an adjacent pair of said members (36, 38, 40) in disposition to encourage the flow of crop severed by the cylinder (10) during rotation thereof to be carried peripherally of the cylinder (10) during its movement around and with the latter, and threaded coupler means (94) passing through each of said knives (42) characterized in that said fastener means (78) includes bracket means (80) fixed to said back surface (74), and the threaded coupler means (94) connect at least one of said bracket means (80) to said inner face (58) of each of said knives (42) and further characterised in that each director (62) comprises an initially flat, rectangular body curved and twisted slightly about an axis (76) oblique to opposite inner and outer edges (64, 66) thereof, said front surface (72) of each director (62) being smoothly arcuate, said bracket means (80) orienting the directors (62) such that only their outer edges (64) engage the knifefaces (58) while the remaining portions of the directors project generally radially inwardly from the knives to encourage the flow of crop severed by the cylinder during rotation thereof to be carried peripherally of the cylinder.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US91258 | 1979-11-05 | ||
US06/091,258 US4301647A (en) | 1979-11-05 | 1979-11-05 | Forage chopping cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0028479A1 EP0028479A1 (en) | 1981-05-13 |
EP0028479B1 true EP0028479B1 (en) | 1986-12-30 |
Family
ID=22226844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80303712A Expired EP0028479B1 (en) | 1979-11-05 | 1980-10-21 | Forage chopping cylinder |
Country Status (3)
Country | Link |
---|---|
US (1) | US4301647A (en) |
EP (1) | EP0028479B1 (en) |
DE (1) | DE3071870D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD225323A1 (en) * | 1984-07-04 | 1985-07-31 | Fortschritt Veb K | CUTTING DRUM FOR A HEDGE BASKET |
DE10234814A1 (en) * | 2002-07-31 | 2004-02-19 | Walter Kolb | Plants for plants |
CN105498925A (en) * | 2016-02-01 | 2016-04-20 | 蒋仕杰 | Helical chopper |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126931A (en) * | 1964-03-31 | Knife support structure | ||
DE7609165U1 (en) * | Karl Mengele & Soehne Maschinenfabrik Und Eisengiesserei Guenzburg-Donau, 8870 Guenzburg | |||
US2521059A (en) * | 1945-08-02 | 1950-09-05 | Pioneer Gen E Motor Corp | Method of forming cutter blades and reels for lawn mowers and the like |
US2476177A (en) * | 1945-10-18 | 1949-07-12 | Allis Chalmers Mfg Co | Forage harvester knife sharpener |
US2656868A (en) * | 1951-07-12 | 1953-10-27 | Int Harvester Co | Forage cutter |
FR2076791A5 (en) * | 1970-01-28 | 1971-10-15 | Sperry Rand France | |
FR2287842A1 (en) * | 1974-10-16 | 1976-05-14 | Deere John Cie Francaise | V-SHAPED KNIFE ROTOR-CHOPPER FOR CHOPPER COLLECTOR |
US4011998A (en) * | 1975-10-30 | 1977-03-15 | Hesston Corporation | Forage harvester having combined cut-and-throw cylinder |
US4319718A (en) * | 1977-12-06 | 1982-03-16 | Sperry Corporation | Forage harvester cutterhead and method of sharpening |
-
1979
- 1979-11-05 US US06/091,258 patent/US4301647A/en not_active Expired - Lifetime
-
1980
- 1980-10-21 EP EP80303712A patent/EP0028479B1/en not_active Expired
- 1980-10-21 DE DE8080303712T patent/DE3071870D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0028479A1 (en) | 1981-05-13 |
US4301647A (en) | 1981-11-24 |
DE3071870D1 (en) | 1987-02-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4257566A (en) | Cutterhead for forage harvesters and the like | |
US5404699A (en) | Knife edged stalk rolls | |
US5145462A (en) | Infeed assembly for an axial-flow combine | |
US4362168A (en) | Separator for an axial flow rotary combine | |
US4499712A (en) | Crop engaging apparatus and methods | |
EP2000019B1 (en) | A stationary knife assembly for a chopper assembly | |
US6314709B1 (en) | Tine guard for windrow pickup apparatus | |
US6470662B1 (en) | Multiple blade cutting apparatus for rotary lawn mower | |
US4505434A (en) | Forage harvester recutter screen | |
US4270338A (en) | Crop harvesting machine | |
US5878970A (en) | Ensilage harvester cutterhead | |
US2910819A (en) | Harvester reel | |
US4478030A (en) | Machine for cutting forage plants | |
US3974970A (en) | Forage harvester cutterhead | |
US3946954A (en) | Single blade recutter for forage harvester | |
CA1096640A (en) | Mowing rotor | |
EP0028479B1 (en) | Forage chopping cylinder | |
US3754384A (en) | Mowing, conditioning and windrowing machine | |
US4207726A (en) | Harvesting implement | |
US7223167B2 (en) | Anti-wind wiper with adjustable extension | |
US5964080A (en) | Harvesting machine | |
US2679873A (en) | Knife mounting for forage choppers | |
US4617786A (en) | Forage harvester having supplemental crop disintegrating means | |
US2573887A (en) | Rotary stalk cutter and shredder | |
US6205752B1 (en) | Rolling crop guide for disc mower conditioners |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19810713 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
ITF | It: translation for a ep patent filed |
Owner name: JACOBACCI & PERANI S.P.A. |
|
REF | Corresponds to: |
Ref document number: 3071870 Country of ref document: DE Date of ref document: 19870205 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITPR | It: changes in ownership of a european patent |
Owner name: CESSIONE;HESSTON S.A. |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19900912 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19900928 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19901029 Year of fee payment: 11 |
|
ITTA | It: last paid annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19911021 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19920630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19920701 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |